Possible differences between the surface and bulk structure of glasses

被引：12

作者：

Avramov, Isak ^{[2
]}

Hoeche, Thomas ^{[1
]}

Henderson, Grant S. ^{[3
]}

机构：

[1] Leibniz Inst Oberflachenmodifizierung eV, D-04318 Leipzig, Germany

[2] Bulgarian Acad Sci, Inst Phys Chem, BU-1113 Sofia, Bulgaria

[3] Univ Toronto, Dept Geol, Toronto, ON M5S 3B1, Canada

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 40-41期

关键词：

STEM/TEM; Silicates; Short-range order; Surfaces and interfaces; Thermodynamics; X-ray absorption;

D O I：

10.1016/j.jnoncrysol.2008.07.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Changes in cation co-ordination at glass surfaces (indicating an increase of the oxygen-to-cation ratio within the topmost superficial layers) are evidenced by comparing data acquired by spectroscopic techniques of different excitation depth. Based on these experimental results, a theoretical model is developed that predicts structural discrepancies between surface and bulk structure. Such reconstructed surfaces are of great importance for all kind of surface-related crystallization phenomena. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：4681 / 4684

页数：4

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